Electric switch.



Pabentd Se 'pt 22, 190s C. A. CLARK.

ELECTRIC SWITCH APPLIOATION FILED MAY 24. 1907.

IPIIITNJ'EISEYES:

PATENT OFFICE.

CHAIiLES A. omen-or HARTFORD, CONNECTICUT.

ELECTRIC swrrcn.

T 0 alt may concern:

lie it known that 1,.CILARLES A. CLARK, a cltlzen of the United States, and a resident of Hartford, in the county of Hartford and Z State of Connecticut, hare invented a new and Improved Electric Switch, of which the following is a spa-:ification.

' My vention relates more especially to that clas of switches in which the operating .3 parts are actuated as by means of a push i )utt'on tomake and break a circuit, am the ob ect of myunvezniion is to provide a device of tlus class extremely simple and cheap in "construction and operation but more especially one that Similbt extremely effective in making breaking the circuit one in which the action of the parts shall be extremel .quick.

'A form ofwlevie e in the use of which these objects may be attained is illustrated in the accompanying drawings, in which Figure 1 is a 5i i-e view of a device embodying my invention with the par-ts in position occupied when the circuit broken, the inclosmg casing not being shown. Fig. '2 is a detail view in section through the device showing the relau've- )osition of.tl1e plate and switch bar with t e parts located as in Fig. 1. Fig. 3 is n'view similar to Fig. 1 but with the nuts in 'iosition just'before movement of the trip p ate and switch bar. Fig. 4 is a viewsinrisar to Fig. 3 but with the parts in position inst after the movement of the trip plate, and with the push button at the inner limit of its movement. Fig. 5 1* a view in section through the device showing the relative position of the trip plate and switch bar with the parts placed as in Fig. 4. Fig. 6 is a detail view in cross-section through the device on the line indicated in Fi 3. v

in the accompanying drawings the numeral 8 denotes a base, of insulating material, which may be a part of a easing'of -iorcelain or other insuiating material inn-losing the mechanism, or m be a part separately formed from sa -id casing. Posts 9 extend from the base on ihe outer end of which (onduetors 11 are secured to tire-base. these conductors supported a face plate 10.

having ire attaching means 12. The con- Iduetors are electrically eonnectedwith the blade contacts 13- A support l-i'is sepia-P Specification of Letters Patent. s ncaaonsiea May 2;, 1907. 7 Serial 1mm.

4 Patent ed Sept. 2 2, 190 8.

E to the base 8, and is or proper length and iform to receive and support the moving parts of the mechanism. A shaft or spindle a switch bar 16 having blades or contacts 17 is secured tothe-shaft. A trip plate 18 is projecting through a 5 0t 23 in the support i 14 in position to receive the thrust of one end of the spring to be hereinafter described; 1 This trip, plate also bears a trip 24.

means for operating the parts is loosely mounted on the shaft 15, and this lever is pivotally engaged at opposite ends with the shanks .Zti'of push buttons or actuators 27-- 2S suitably mounted in the face The actuating lever 25 has a detent older 29 and a detent actuator 30. The holder is i preferably a slight projection with its edge curved to fit a curved surface 31 on the edge of the detentplate 32. The detent actuator to engage the edge of the detont plate to move the latter. tensioning arm 33 for the spring 34 mounted on the shaft 15. The detcht plate 32 is pivotally mounted on a stud 36 secured to the support14 and has detents 37-39 projecting through slots 38- in the support 14 in position to engage the trip 24 upon the trip plate 18.

This construction provides a switch in which there is a minimum amount of wear of jthe parts and a consequent positive operafirm for a. maximum length of time. It prw ides a device in which a sharp and decisive release and action of the parts is obtained.

The operatiou'of the device is as follows: The parts being in the position shown in Fig. 1 with the push button 27 extended, the latter is pushed inward rocking the lever 25 on its l pivot and carrying. the spring tensioning arrn' l 33 to the right, or to the position shown m i Fig. 3, thus placing the spring under tension,

15,is rotatably mounted in the support, and

also secured to the shaft, the parts being late 10..

is pref erably a shoulder on the lever arranged the drawings. The't'rip plate has an arm 22 An actuating lever 25 forming primary The lever .25 also has a i the parts now being the position shown and of the recess 31 being struck from the.

same center. The switch bar is prevented from movement during this operation b reason of the engagement'of the trip 24 wit 1 the detent 37, as shown in Fig. The push button 27 passing-beyond the position shown. in Fig. 3 and'tothat shown in Fig. tearries the lever to such point that the shoulder 30 engagingv theedge of the detent plate 32 swings it on its pivot, moving the detent 37 out of the ath of the trip 24 to the positionshown in ig. 5, allowing the trip plate to move to the position shown in Fig. 5 under the impulse of the spring 34.

It will be noted, by referring to Fig. 4, that in this position of the parts the spring is now exerting pressure upon the tensioning arm '33 but in a direction contrary to that in which the lever was moved to cause the parts to assume this position. Pressureupon the push button 27 now being relieved the'latter moves backward to the position shown in Fig. 3 when the' detcnts assume the position shown in Fig. 2, but with the trip plate in the opposite position, and with the switch blade in engagement with the contacts. A reversalof the above described operation will disengage the switch blade from its contacts. I

'hat I claim as my invention and desire to secure by Letters Patent is:

1. A switch bar with its contactsand conneetions, a tripoperatively connected therewith, means for moving the trip, a detent to engage the trip but arranged for disengagenient therefrom, means for positively holding the detent against movement during initial movement oi the actuator butpermitting quick release and movement of the detent at iinal movement of the actuator,

and an actuator for positively moving the detent from the path of movement of the trip.

2. A switch bar with its contacts and connections, a trip operatwely, connected with the bar, means-for operating the trip, a pivoted operating lever having a holder with a A dcient plate.

holding surface formed on the'arc ol a circle struck'f'rom its pivot, a swinging detcnt plate operatively connected withthe trip and having a recess formed to lit said holding surface, and means for operating said 3. A switch barh'vith its contacts and con-'- nections, a trip piate'opcrativcl v connected with the bar: and bearing a trip, 'aspring for ing the spring, retents located in the mth of movementof said trip but arrange for disengagement therefrom, means for pos actuating the trip plate, means for lensionl tively holding the dctents against movement during initial movement of an actuator but permitting uick release and movement of the detent i uring' final movement of said .actuator, and the actuator for positively 7n nioving said detents out of the path of movement of the trip..

-1. A base witha support extending therefrom, a switch bar, and a trip plate operatively' connected therewith and 'mounted'on one side 'of the support, contacts and connections for said switch bar, an operating lever and a detent plate pivoted to the support on the side opposite the trip plate sm'gl support to engage a trip on the trip plate, means for holding the detent plate against movement in an initial operation of the parts, and means for moving the detent plate to disengage the detents from said trip'in a 35 subsequentoperation of the parts.

5. A base having a support ext-ending therefrom, a switch liar and aswitch late operatively coimected therewith and 0th mounted on one side of the support, connections and contacts. for said switch bar, a s)ring arm extending'from the trip plate t irough the support, a lever located on the opposite side of the support from the trip and having a spring engaging arm, means for opera-ting the lover, a detent mounted on the same side of the support with said lever and having detents extending through thesupport to engage a trip on the trip plate, means nections, a trip plate operatively connected with the bar and having 'a trip, means for forcing the trip plate'to' movesaid bar, an operatiin lever having a holder, a swinging detcn-t plate having detents to engage said no trip and arranged for engagement with and disengagement from said holder, and means for operating the detent plate to move the dotenls out of the path ofsaid trip.

T. swilch bar with its umncc l-ions and contacts, a trip plate operativclv connected with the switch bar and havin.g a trip, a

1 spring for operating the trip plate, a1ioperat-. ing lever to operate said s iring. said love! having a curved shaped ho dcr. a pivotalh' mounted dctcnt plate with'a curved surface fitting said holder-and with dctents to engage said o-ip, said lever and dctent plate being arrangcdior engagement and disengagement and means for movin the plate to disengage 5 the dcti-nts from sai; trip. I r

S. base "with a support extending there from, aswitch har mounted'on the support, contacts and connections for said bar, a; trip plate operatively connected with the bar and plate having detents projecting through the go or holding the detent plate against move 100 f 6. A switch bar with its contacts and con.- 105 havil ga trip, a lever fbrppratipg the paxjss, neans for moving said holde: to disengage a spring \lmth one'end m eilga ementl with the detents from said trip.

. the trip p ate and the other wit said ever V ai'hol'glqr projecting from the operating lave; CHARLES A K 2i gletenfplafe-arrange l for engagement with i Witnesses: v

' and idisenghgement from sa'1d holdcr and ARTHUR B. JENKINS,

rhaving -de ten ts to engage said trip. and LENA E. Bnnxovrrcn. 

